<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>


<!--
 用户名的参数名默认 username
 密码的参数名默认 password
 处理登录请求的url默认 /login
-->

<form action="/login" method="post">
    用户名：
    <input type="text" name="username"> <br>
    密码：
    <input type="text" name="password"> <br>

    <input type="submit" value="登录">
</form>

</body>
</html>
